Why isn’t there a name for flat magic pen?

Considering armor pen has “lethality” (a cool ass name) for the flat amount, how come flat and percentage magic pen shares the same name? I think we should come up with a name for flat magic pen. I think “disenchantment” would be pretty cool. Like imagine “stormsurge only gives 10 disenchantment” or is it too long? Can y’all come up with a better name?